ballantine



. (No Model.)

A. T. BALLANTINE. MEANS FOR PROTECTING SHAETS FROM HEAT.

Patented May 5, 1885.

end elevation of the same.

UNITED STATES PATENT ()FEICE.

ALEXANDER r. BALLANTINE, OF GENEVA, OHIO, vAssIeNoE TO ELLA B.BALLANTINE, OF SAME PLACE.

MEANS FOR PROTECTING SHAFTS FROM HEAT.

SPECIFICATION forming part of Letters Patent No. 317,435, dated May 5,1885.

Application filed March 11, 1884. (No model.)

To aZZ whom it may concern.-

Be it known that I, ALEXANDER T. BAL- LANTINE, a citizen of the UnitedStates, residing at Geneva, in the county of Ashtabula and State ofOhio, have invented certain new and useful Improvements in Means forProtecting Shafts from Heat; and I'do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make. and usethe same, reference being had to the accompanying drawings, and toletters or figures of reference marked thereon, which form a part ofthis specification.

My invention has for its object the protec tion of revolving shaftingfrom the expandin g effect of heat, to which such shafting may besubjected by reason of its unavoidable proximity to heated localitiesand to that end it consists, substantially, in providing the exposedportion of the sh afting with a surroundin g chamber-preferably water orair tightthrough which a limited quantity of water at a low temperatureis constantly passing, and While therein is thrown by suitable means incontact with the walls of such surrounding chamber to abstract and carryoff their heat, thus keeping the shafting protected in this mannerentirely cool and free from injurious expansion.

I will now proceed to definitely describe the manner in which I haveapplied my invention, it being clearly understood that it is susceptibleof considerable variation in its adaptation to different shaftingwithout departin g from the spirit of my invention.

In the drawings, Figure 1 is a side elevation, partly in section, of ashaft to which my improved construction is applied. Fig. 2 is an Fig. 3is a transverse section through the shaft and its surrounding chamber.Fig. 4 is a top plan view of Fig. 1, with the upper section of thesurrounding chamber removed, and Fig. 5 is a detail view.

Referring to the drawings, a is the shaft.

The chamber which surrounds it consists of two semi-cylindricalsections, 1) and 12, provided, respectively, with the longitudinalflanges b and W, by means of which the two 1 is admitted to the chamber.

sections are securely bolted around the shaft, a suitable watertightpacking,.b having been placed between the flanges I) h The lowersection, b, has the longitudinal flanges b b on either side of itsbottom surface, by means of which the section b is secured to thefoundation-timbers c.

d d is a tapering collar, made in two semicircular sections. Eachsection is provided with a lug, (1 by means of which and the screwboltsd the sections cl d are adjusted back and forth in the tapering socket ein the end bearings of the chamber. One of these sectional collars cl (1is placed at each end of the bearings of the chamber 1) b, as justdescribed. The two sections (Z d of this collar have the alternate deepand shallow grooves d and d cut in their tapering surfaces, into whichare inserted strips of expansible material. Preferably pine wood andsimilar strips, as at d, are laid between the two sections d d when inposition in their socket and around the shaft. The natural expansion ofthese strips by contact with the water from the chamber serves topreserve a close contact of the collar with the bearings and shaft, thusrendering the chamber practically water-tight at the bearings.

Within the sections 1) b, and between the tapering sockets e, is thecylindrical chamber f, through the center of which the shaft a passes.This chamber f is considerably larger in diameter than the shaft a, thusleaving an annular space within the chamber around the shaft.

9 is an inletpipe opening into the side of the chamber f, by means ofwhich the cooling-fluid g is an outlet-orifice, through which thecooling-fluid escapes. This outlct-orificeis preferably located a shortdistance above the bottom of the chamber f.

An orifice and plug, g is provided at the bot tom of the chamber, to beused, when aliquid is employed as the cooling medium, in dis chargingthe chamber f of its contents when desired.

h h are paddles or agitators, one or more, which are secured in anyconvenient manner to the shaft (1, and revolve with it in thesurrounding chamber f. These agitators are herein shown as secured tothe shaft a by the bands It, which pass tightly around the shaft,

and are riveted to the paddles. They are made of sufficient size tonearly fill the space between the shaft and the wall of the chamber.

The operation of the parts just described is as follows The water orother cooling agent is admitted to the chamber through inlet-pipe g. Itwill be seen that by reason of the location of the outlet-orifice 9 onlya small quantity of water iskept in thebottom of the chamber. Thiswater, as it passes through the chamber, is constantly lifted and thrownin contact with the walls of the chamber by the paddles h h, thusabstracting the heat from such walls, and carrying it off through theoutlet-pipe g. In this manner the shaft is protected from the heat whichit would otherwise be exposed to, and thereby prevented from expanding.

It is obvious that in adapting my invention to other forms of shaftsthan that herein shown, and to shafts in other and varied positions, thedetails of construction would have to be correspondingly varied andmodified; but these variations would all be confined within the limitsof my invention so long as they comprised a surrounding chamber throughwhich a limited quantity of water or other cooling agent, ata lowtemperature, is constantly passing, and while therein is thrown bysuitable means in contact with the walls of such surrounding chamber toabstract and carry off their heat.

I claiml. As a means of protecting revolving shafting from heat, asurrounding chamber provided with inlet and outlet orifices and tightjoints and bearings, through which chamber a limited quantity of wateror other cooling agent is constantly passed, and an agitator oragitators attached to and revolving with the shaft and within thechamber, to throw the passing water or other cooling agent in contactwith the Walls of the chamber, to abstract and carry off their heat,substantially as shown and described.

2. The combination, with the shaft to and its attached agitators orpaddles h h, of the sectioned chamber 1) b, with tight joints, and thesectioned tapering collar cl d, adjustable in the socket e, to form atight bearing for the shaft,

as and for the purposestated.

3. The combination, with the shaft (0 and its attached agitators orpaddles h h, of the sectioned chamber I) b, with tightjoints, and thesectioned tapering collar (1 (1, provided with the inlaid strips d d ofpine or other expansible material, as and for the purpose stated.

4. The tapering sectioned collar d d, provided with the adjusting-lugs dd for the reception of the adjusting-bolts d 66 and having its taperingsurface provided with the longitudinal inlaid strips of pine or otherexpansible material, as and for the purpose stated.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALEXANDER T. BALLANTINE.

Witnesses:

J. FRED. BEEN, W. T. MILLER.

